diff --git a/.gitignore b/.gitignore
index 44f3a06..9d2d3b4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 .cipd_bin
 /descpb.bin
 /recipes/.recipe_deps
+.idea/
\ No newline at end of file
diff --git a/go/test_platform/service_version.pb.go b/go/test_platform/service_version.pb.go
new file mode 100644
index 0000000..b936b1a
--- /dev/null
+++ b/go/test_platform/service_version.pb.go
@@ -0,0 +1,85 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// source: test_platform/service_version.proto
+
+package test_platform
+
+import (
+	fmt "fmt"
+	proto "github.com/golang/protobuf/proto"
+	math "math"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
+
+// ServiceVersion denotes the version of services (e.g. the skylab CLI) that
+// can trigger Test Platform's Buildbucket builders (e.g. cros_test_platform
+// and dut_leaser). It is used to ensure that users keep their local versions
+// of such services up-to-date.
+type ServiceVersion struct {
+	Global               int64    `protobuf:"varint,1,opt,name=global,proto3" json:"global,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *ServiceVersion) Reset()         { *m = ServiceVersion{} }
+func (m *ServiceVersion) String() string { return proto.CompactTextString(m) }
+func (*ServiceVersion) ProtoMessage()    {}
+func (*ServiceVersion) Descriptor() ([]byte, []int) {
+	return fileDescriptor_418c2109a1e5e267, []int{0}
+}
+
+func (m *ServiceVersion) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_ServiceVersion.Unmarshal(m, b)
+}
+func (m *ServiceVersion) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_ServiceVersion.Marshal(b, m, deterministic)
+}
+func (m *ServiceVersion) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_ServiceVersion.Merge(m, src)
+}
+func (m *ServiceVersion) XXX_Size() int {
+	return xxx_messageInfo_ServiceVersion.Size(m)
+}
+func (m *ServiceVersion) XXX_DiscardUnknown() {
+	xxx_messageInfo_ServiceVersion.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_ServiceVersion proto.InternalMessageInfo
+
+func (m *ServiceVersion) GetGlobal() int64 {
+	if m != nil {
+		return m.Global
+	}
+	return 0
+}
+
+func init() {
+	proto.RegisterType((*ServiceVersion)(nil), "test_platform.ServiceVersion")
+}
+
+func init() {
+	proto.RegisterFile("test_platform/service_version.proto", fileDescriptor_418c2109a1e5e267)
+}
+
+var fileDescriptor_418c2109a1e5e267 = []byte{
+	// 138 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xe2, 0x52, 0x2e, 0x49, 0x2d, 0x2e,
+	0x89, 0x2f, 0xc8, 0x49, 0x2c, 0x49, 0xcb, 0x2f, 0xca, 0xd5, 0x2f, 0x4e, 0x2d, 0x2a, 0xcb, 0x4c,
+	0x4e, 0x8d, 0x2f, 0x4b, 0x2d, 0x2a, 0xce, 0xcc, 0xcf, 0xd3, 0x2b, 0x28, 0xca, 0x2f, 0xc9, 0x17,
+	0xe2, 0x45, 0x51, 0xa4, 0xa4, 0xc1, 0xc5, 0x17, 0x0c, 0x51, 0x17, 0x06, 0x51, 0x26, 0x24, 0xc6,
+	0xc5, 0x96, 0x9e, 0x93, 0x9f, 0x94, 0x98, 0x23, 0xc1, 0xa8, 0xc0, 0xa8, 0xc1, 0x1c, 0x04, 0xe5,
+	0x39, 0x59, 0x46, 0x99, 0xa7, 0xe7, 0xeb, 0x25, 0x67, 0x14, 0xe5, 0xe7, 0x66, 0x96, 0xe6, 0xea,
+	0xe5, 0x17, 0xa5, 0xeb, 0xc3, 0x38, 0xf9, 0xc5, 0xfa, 0x99, 0x79, 0x69, 0x45, 0x89, 0xfa, 0x60,
+	0x2b, 0xf4, 0xd3, 0xf3, 0xf5, 0x51, 0x2c, 0x49, 0x62, 0x03, 0x8b, 0x1b, 0x03, 0x02, 0x00, 0x00,
+	0xff, 0xff, 0x49, 0x07, 0x71, 0x02, 0xa1, 0x00, 0x00, 0x00,
+}
diff --git a/src/test_platform/service_version.proto b/src/test_platform/service_version.proto
new file mode 100644
index 0000000..88de7d9
--- /dev/null
+++ b/src/test_platform/service_version.proto
@@ -0,0 +1,17 @@
+// Copyright 2020 The Chromium OS Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+syntax = "proto3";
+
+package test_platform;
+
+option go_package = "go.chromium.org/chromiumos/infra/proto/go/test_platform";
+
+// ServiceVersion denotes the version of services (e.g. the skylab CLI) that
+// can trigger Test Platform's Buildbucket builders (e.g. cros_test_platform
+// and dut_leaser). It is used to ensure that users keep their local versions
+// of such services up-to-date.
+message ServiceVersion {
+  int64 global = 1;
+}
\ No newline at end of file